Definatly going to have to rethink that helmet design. Straight forward, you can't see the Lekku, and it looks like the Mickey Mouse Mando.
So, back to the drawing board for that helmet. I think I'm going to try using a Hyabusa Halo 3 type helmet. Basically let the odd shape of the Twi'lek skull and larger and more pronounced Lekku speak for themselves in that design.